diff --git a/fhem/FHEM/TcpServerUtils.pm b/fhem/FHEM/TcpServerUtils.pm
index 7b2667f23..b2c35dc90 100644
--- a/fhem/FHEM/TcpServerUtils.pm
+++ b/fhem/FHEM/TcpServerUtils.pm
@@ -333,7 +333,8 @@ TcpServer_Accept($$)
       $err .= " ".($SSL_ERROR ? $SSL_ERROR : IO::Socket::SSL::errstr());
       my $errLevel = ($err =~ m/error:14094416:SSL/ ? 5 : 1); # 61511
       Log3 $name, $errLevel, "$type SSL/HTTPS error: $err (peer: $caddr)"
-        if($err !~ m/error:00000000:lib.0.:func.0.:reason.0./); #Forum 56364
+        if($err !~ m/error:00000000:lib.0.:func.0.:reason.0./ && #56364
+           $err !~ m/sslv3 alert certificate unknown/);          #134820
       close($clientinfo[0]);
       return undef;
     }